Is flask safe to use?

flask has no known vulnerabilities on the latest version (3.1.3). DepScope rates its health at 90/100 (low risk).

What is the latest version of flask?

The latest version of flask is 3.1.3, released 2026-02-19.

Does flask have known vulnerabilities?

No known vulnerabilities on the latest version of flask.

No, flask is actively maintained. Latest release: 3.1.3 (2026-02-19).

What are alternatives to flask?

Popular alternatives to flask in PyPI include: boto3, boto3/, packaging, urllib3/, certifi.

What license does flask use?

flask is licensed under BSD-3-Clause.

flask

pypiv3.1.3

A simple framework for building complex web applications.

License BSD-3-Clausepermissive64 versions9 deps49,769,469 weekly dl

pallets/flask/

/ 100

Health

safe to use

[email protected] is safe to use (health: 90/100)

Health breakdown0 – 100

20/25

maintenance

20/20

popularity

25/25

security

15/15

maturity

10/15

community

Vulnerabilities

none known

OSS Scorecard

OpenSSF security posture score

7.1/10

moderate

Maintainer trust

Active maintainers (3m)

4

Contributors (12m)

10

Primary author dominance

90%

GitHub stars

71,436

single author dominance

Quality signals

OSS Criticality

0.51high

Download trend

stable(0%)

Publish security

API token

Health History

Dependency Tree

License Audit

Dependencies (9)

blinker click importlib-metadata itsdangerous jinja2 markupsafe werkzeug asgiref python-dotenv;

API access

Get this data programmatically — free, no authentication.

curl https://depscope.dev/api/check/pypi/flask